一前言目前先进工业国家,如美国、德国、日本、比利时等使用的剪板机剪刃都是整体长剪刃,长度可达4100mm。可目前我国生产的剪板机长剪刃大都是并接而成的,使接头不能圆滑过渡,上下刀片间隙均勻度难以保证,影响剪切质量。多年来国内使用的刀片材料一直采用6CrW2Si钢,虽然确定了最佳热处理规范但由于材质不够理想,因此国产的分段并接刀片 A foreword Currently advanced industrial countries, such as the United States, Germany, Japan, Belgium and other cutting shears are the overall cutting edge, length up to 4100mm. At present, China’s production of shears are mostly shears scissors are made of parallel, so that the joint can not be a smooth transition, the upper and lower blade gap uniformity is difficult to guarantee, affecting the cutting quality. Over the years the blade material used in the country has been using 6CrW2Si steel, although the best heat treatment to determine the norms but not ideal because of the material, so the domestic section and then blade